They may have a good replica, possibly even the one made by Solomon for Sheba, but the original is in Israel in a catacomb under the north side of Old City of Jerusalem.
I saw a long piece on TLC or such about a guy who went to Ethiopia and had lots of footage of the chapel housing the ARK. It's on an island somewhere in Ethiopia. The photo above is probably a file photo and not real. The folks in Ethiopis think the ARK is there. Only one guy sees it and it is never on public display. He made a very strong case that if not the ARk there is something very holy there and it has been there for a very very long time.
My own thought is that the Ark was removed from Jerusalem. There are bias relief sculptures in Rome indicating the Ark was brought to Rome by hadrian with orther treasures but no knoelwdge of what happened to it in Rome.
Speaking of the Arc of the Covenant...
...the original is in Israel in a catacomb under the north side of Old City of Jerusalem.
If that is the case, then the ultimate question must be posed, "Why is it still sitting there and not brought out to unleash the almighty power that it contains to slay the Arabs who want to wipe Israel off the face of the earth?"
Do the Levites have something "up their sleeve" for later, after more Jews are maimed and killed, or are they putting together a sequel to the Book of Job, i.e. "Job II, the Sufferer Guy"?
Hammurabi's original code of laws that afforded Sumer (Babylonia proper) a civil and criminal law system centuries before the Old Testament was scripted are probably in the Arc, if it in fact the Arc ever existed, and the Jews damn sure don't want anybody to know about that.
Those who aren't afraid of being struck down by a bolt of lightning should go
Here and look for the similarities of the Babylonian Hammurabi's Code of Laws and those rewritten centuries later as the text of the Bible.
...or
Here #2 for further enlightenment.
A note of interest: Hammurabi's reign was from 1795-1750 BC...